On Mon, Oct 14, 2013 at 1:35 PM, H. Peter Anvin <h...@zytor.com> wrote: ... >> 2. also we should avoid adding "movable_nodes" command line. ... >> 6. in the long run, We should rework our NUMA booting: >> a. boot system with boot numa nodes early only. >> b. in later init stage or user space, init other nodes >> RAM/CPU/PCI...in parallel. >> that will reduce boot time for 8 sockets/32 sockets dramatically. >> >> We will need to parse srat table early so could avoid init memory for >> non-boot nodes. >> > > I really like the long-term plan (and, I might want to add, the above > writeup.) > > However, I don't understand how we can avoid #2, given that it is > fundamentally a sysadmin-driven tradeoff between performance and > reliability.
If we make all numa systems support nodes hot-remove logically. like we boot system with node0, and hot add other nodes one by one, we should hot remove them later. Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/